bendns' repos / rust-analyzer
Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/hir-ty/src/infer/expr.rs')
-rw-r--r--crates/hir-ty/src/infer/expr.rs23
1 files changed, 12 insertions, 11 deletions
diff --git a/crates/hir-ty/src/infer/expr.rs b/crates/hir-ty/src/infer/expr.rs
index 9f97261486..175fded8cc 100644
--- a/crates/hir-ty/src/infer/expr.rs
+++ b/crates/hir-ty/src/infer/expr.rs
@@ -235,7 +235,7 @@ impl<'a> InferenceContext<'a> {
Expr::Closure { body, args, ret_type, arg_types, closure_kind } => {
assert_eq!(args.len(), arg_types.len());
- let mut sig_tys = Vec::new();
+ let mut sig_tys = Vec::with_capacity(arg_types.len() + 1);
// collect explicitly written argument types
for arg_type in arg_types.iter() {
@@ -256,7 +256,8 @@ impl<'a> InferenceContext<'a> {
num_binders: 0,
sig: FnSig { abi: (), safety: chalk_ir::Safety::Safe, variadic: false },
substitution: FnSubst(
- Substitution::from_iter(Interner, sig_tys.clone()).shifted_in(Interner),
+ Substitution::from_iter(Interner, sig_tys.iter().cloned())
+ .shifted_in(Interner),
),
})
.intern(Interner);
@@ -318,16 +319,16 @@ impl<'a> InferenceContext<'a> {
Expr::Call { callee, args, .. } => {
let callee_ty = self.infer_expr(*callee, &Expectation::none());
let mut derefs = Autoderef::new(&mut self.table, callee_ty.clone());
- let mut res = None;
- let mut derefed_callee = callee_ty.clone();
- // manual loop to be able to access `derefs.table`
- while let Some((callee_deref_ty, _)) = derefs.next() {
- res = derefs.table.callable_sig(&callee_deref_ty, args.len());
- if res.is_some() {
- derefed_callee = callee_deref_ty;
- break;
+ let (res, derefed_callee) = 'b: {
+ // manual loop to be able to access `derefs.table`
+ while let Some((callee_deref_ty, _)) = derefs.next() {
+ let res = derefs.table.callable_sig(&callee_deref_ty, args.len());
+ if res.is_some() {
+ break 'b (res, callee_deref_ty);
+ }
}
- }
+ (None, callee_ty.clone())
+ };
// if the function is unresolved, we use is_varargs=true to
// suppress the arg count diagnostic here
let is_varargs =